[dns-operations] issue with m root server from China?

[Shawn Hsiao]

We have reports that some qnames are not resolving properly in China, and in two of the follow ups I have received it appears they are getting random responses directly from the m root server.   Not sure what is causing it, but I am wondering if someone on the list knows.

So far, I am only aware this happening to edgecastcdn.net<http://edgecastcdn.net> domain, and other domains we tested are resolving fine.

Thanks.

(from a home computer)
$ dig +trace cs216.wpc.edgecastcdn.net<http://cs216.wpc.edgecastcdn.net>

; <<>> DiG 9.8.3-P1 <<>> +trace cs216.wpc.edgecastcdn.net
;; global options: +cmd
. 23964
IN NS
j.root-servers.net.
. 23964
IN NS
i.root-servers.net.
. 23964
IN NS
g.root-servers.net.
. 23964
IN NS
f.root-servers.net.
. 23964
IN NS
m.root-servers.net.
. 23964
IN NS
h.root-servers.net.
. 23964
IN NS
e.root-servers.net.
. 23964
IN NS
c.root-servers.net.
. 23964
IN NS
a.root-servers.net.
. 23964
IN NS
l.root-servers.net.
. 23964
IN NS
k.root-servers.net.
. 23964
IN NS
b.root-servers.net.
. 23964
IN NS d.root-servers.net.
;; Received 228 bytes from 192.168.1.1#53(192.168.1.1) in 12 ms

cs216.wpc.edgecastcdn.net. 2732 IN A 206.17.103.24
;; Received 84 bytes from 202.12.27.33#53(202.12.27.33) in 100 ms


(from a server in a datacenter)
$ dig +trace cs216.wpc.edgecastcdn.net<http://cs216.wpc.edgecastcdn.net>

; <<>> DiG 9.8.2rc1-RedHat-9.8.2-0.17.rc1.el6_4.4 <<>> +trace cs216.wpc.edgecastcdn.net
;; global options: +cmd
.
498401 IN
NS b.root-servers.net.
.
498401 IN
NS i.root-servers.net.
.
498401 IN
NS c.root-servers.net.
.
498401 IN
NS a.root-servers.net.
.
498401 IN
NS l.root-servers.net.
.
498401 IN
NS j.root-servers.net.
.
498401 IN
NS e.root-servers.net.
.
498401 IN
NS m.root-servers.net.
.
498401 IN
NS g.root-servers.net.
.
498401 IN
NS k.root-servers.net.
.
498401 IN
NS h.root-servers.net.
.
498401 IN
NS d.root-servers.net.
.
498401 IN
NS f.root-servers.net.
;; Received 508 bytes from 192.168.4.192#53(192.168.4.192) in 8419 ms

cs216.wpc.edgecastcdn.net. 1911
IN A
54.210.250.207
;; Received 59 bytes from 202.12.27.33#53(202.12.27.33) in 3 ms

---
// Shawn




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